PERMFILE59652

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: 1990 ALLUVIAL VALLEY FLOOR INVESTIGATIONS FOR THE YOAST MINE
• Section_Exhibit Name: TAB 16 ATTACHMENT 16-3
• Media Type: D
• Archive: No

Tab, 9 •
Ground Water Quality Data
Grassy Creek
1991-1992
Station YGAL15
UNCENSORED DATA CENSORED DATA
N0. OF HO. OF
OBS. MEAN ST.DEV. MIN MAX OBS. MIN HAX
FIELD PARAMETERS
CONDUCTIVITY IUMHOS/CM) 6 4103.33 284.02 3780.00 4440.00 0
PH (UNITS) 6 7.15 6.90 8.20 0
HATER TEMPERATURE (DEG L7 6 10.40 2.30 6.70 12.80 0
DEPTH TO HATER IFT) 5 1.29 0.15 1.12 1.47 0
LABORATORY PARAMETERS
ALKALINITY, DI55. (MC/L OF CACO37 6 369.67 16.61 352.00 392.00 0
ALUMINUM, DISS. (HG/L) ~1 0.10 0.10 0.10 5 c 0.05 c 0.05
ARSENIC, DISS, IUG/LI 4 2.25 1.50 1.00 4.00 2 < 1.00 < 5.00
BARIUM, DI55. (UG/L) 6 18.33 4.08 10.00 20.00 0
BICAR80NATE, DISS. lMG/L1 6 449.33 22.41 420.00 478.00 0
BORON, DISS. IUC/L) 6 101.67 23.17 70.00 130.00 0
CADMIUM, DI55, fUG/L1 0 6 < 5.00 < 5.00
CALCIUM, DISS, lHC/L) 6 394.00 17.18 369.00 414.00 0
CARBONATE, DI55. IMG/L7 6 O.B3 2.04 0.00 5.00 0
CHLORIDE, DISS. lMG/L) 6 29.33 6.41 24.00 42.00 0
CHROMIUM, DI55. IUC/L) 0 6 < 10.00 < 10.00
CONDUCTIVITY .1 25 OEC C (UHHOS/CH) 6 4248.33 640.26 3510.00 5450.00 0
COPPER, DISS. IUG/L) 0 6 < 10.00 < 10.00
FLUORIDE, DISS. IMG/L) 6 0.25 0.08 0.20 0.40 0
HARDNESS AS CACO3 IMG/L) ~ 6 1734.67 81.86 1599.00 1830.00 0
IRON, DI55. IMG/L) 6 8.18 3.eB 1.27 10.90 D
LEAD, DISS. IUG/L) 2 40.00 14.14 30.00 50.00 4 < 20.00 < 20.00
MAGNESIUM, DI55. (MG/L) 6 182.83 10.30 165.00 194.00 0
MANGANESE, DISS. (MG/L1 6 0.70 0.11 0.55 0.88 0
MERCURY, DISS. IUG/L7 0 6 < 0.10 < 0.10
MOLYBDENUM, Oi55. (UC/L) 1 2.00 2.00 2.00 5 < 1.00 < 1.00
NICKEL, DISS. (UG/L1 0 6 < 20.00 < 20.00
NITROGEN, AMMONIA, DISS. (MG/L) 6 0.46 0.19 0.20 0.75 0
NITROGEN, NITRATE, DISS. fMG/L) 4 0.16 0.17 0.04 0.40 2 < 0.02 < 0.02
NITROGEN, NITRITE, DISS. IMG/L) 3 0.02 0.01 0.01 0.02 3 < 0.01 < 0.01
PH .~ 25 DEG C 6 7.76 7.30 8.50 0
PHOSPHATE AS PO4, DISS. (MC/L) 0 6 < 0.10 < 0.10
POTASSIUM, DISS. (HG/L) 6 7.33 0.52 7.00 8.00 0
SELENIUM, DISS. (UG/L) D 6 < 1.00 < 5.00
SILVER, DI55. (UG/L1 0 6 < 10.00 < 10.00
SODIUM, DISS. (MG/L) 6 480.67 21.02 464.00 508.00 0 .
SAR 6 S.OB 0.18 4.83 5.32 0
SULFATE, DISS. (MG/L) 6 2320.50 136.27 2107.00 2517.00 0
SULFIDE, TOTAL (MG/L) 2 0.07 0.04 0.04 0.10 4 < 0.01 c 0.10
SUSPENDED SOLIDS lMG/LI 6 644.17 557.19 324.00 1685.00 0
ZINC, DISS. (MG/L) 6 0.16 0.31 0.02 0.63 0
CATION/ANION BALANCE (%) 6 -0.79 0.65 -1.82 -0.15 0 ,
DISS. DISSOLVED SOLIDS ~ 160 DEG (MG/L7 6 3756.81 221.41 3504.00 4030.00 0
DI55. DISSOLVED SOLIDS, CALCULATED (MG/L] 6 3629.67 176.55 3372.00 3889.00 0
INDICATES NO DATA